Dispersion of ZnAl-LDHs Nanosheets by Cellulose to Improve Adsorption Capacity toward Phosphate

作者：Zhang Yan-Ru; Liang Du-Juan; Wu Min^*; Zhao Xin-Hua; Yang Xiao-Jing

来源：Chinese Journal of Inorganic Chemistry, 2013, 29(3): 628-634.

DOI：10.3969/j.issn.1001-4861.2013.00.069

• layered compounds
• nanosheets
• colloids
• adsorption
• phosphorus

In order to take advantage of large specific surface area, the nanosheets obtained by delaminating ZnAl layered double hydroxides (ZnAl-LDHs) in formamide were stabilized by cellulose in aqueous solution. The structure, composition and morphology of the resulting nanocomposites of ZnAl-LDHs nanosheets and carboxymethyl cellulose were characterized by XRD, FTIR, SEM, TEM, C, H, and N elemental analysis, ICP and ion chromatograph techniques. In addition, the performance of ZnAl-LDHs nanosheets on phosphorus removal was investigated. The results show that the nanocomposites have high selectivity and adsorption capacity toward phosphate. The selectivity sequences are as follows: H2PO4->>SO42->Cl->NO3-. The maximum adsorption capacity could reach 40 mg of P per gram of LDHs approximately.

• 出版日期2013-3-10
• 单位北京师范大学; 中国科学院理化技术研究所